[nix0n]

How does this compare to the existing audio tunneling in some versions of Android?

(The best writeup of this I've seen is https://github.com/felixpalmer/android-visualizer/issues/5 which details some of the problems that audio tunneling can cause)

[whatever_dude]

A good first step is probably to read Android's own current situation page on the matter and look at the numbers.

http://source.android.com/devices/audio/latency_measurements...

Basically it has been getting and better with new versions of Android and better hardware, but it still has room for improvements.